Prosecution Insights
Last updated: July 05, 2026
Application No. 19/008,238

SYSTEMS AND METHODS TO BALANCE SOLAR PANELS IN A MULTI-PANEL SYSTEM

Final Rejection §102§103
Filed
Jan 02, 2025
Priority
Nov 26, 2008 — provisional 61/200,279 +6 more
Examiner
KESSIE, DANIEL
Art Unit
2836
Tech Center
2800 — Semiconductors & Electrical Systems
Assignee
Tigo Energy Innovations LLC
OA Round
2 (Final)
62%
Grant Probability
Moderate
3-4
OA Rounds
1y 8m
Est. Remaining
86%
With Interview

Examiner Intelligence

Grants 62% of resolved cases
62%
Career Allowance Rate
431 granted / 700 resolved
-6.4% vs TC avg
Strong +24% interview lift
Without
With
+24.5%
Interview Lift
resolved cases with interview
Typical timeline
3y 2m
Avg Prosecution
49 currently pending
Career history
768
Total Applications
across all art units

Statute-Specific Performance

§101
0.5%
-39.5% vs TC avg
§103
90.1%
+50.1% vs TC avg
§102
6.7%
-33.3% vs TC avg
§112
1.4%
-38.6% vs TC avg
Black line = Tech Center average estimate • Based on career data from 700 resolved cases

Office Action

§102 §103
DETAILED ACTION Notice of Pre-AIA or AIA Status The present application is being examined under the pre-AIA first to invent provisions. Claim Rejections - 35 USC § 102 (b) the invention was patented or described in a printed publication in this or a foreign country or in public use or on sale in this country, more than one year prior to the date of application for patent in the United States. Claim(s) 1, 2, 4-6, 8-11, 13 and 15 are rejected under pre-AIA 35 U.S.C. 102(b) as being anticipated by Klein et al. (US 2008/0236648) Re Claim 1; Klein discloses a photovoltaic energy production system, comprising: a first solar module (404) having a first terminal (+) and a second terminal (-); a second solar module (401) having a third terminal (421) and a fourth terminal (426); a first switch (Q2) connected between the second terminal (-) and the third terminal (421) (Fig. 6); and a second switch (Q1) connected between the first terminal (+) and the third terminal (421), (Fig. 6) wherein in a first period of a duty cycle, the first switch is turned off to disconnect the second terminal and the third terminal, while the second switch is turned on to connect the first terminal and the third terminal, (Par 0036) and wherein in a second period of the duty cycle, the first switch is turned on to connect the second terminal and the third terminal, while the second switch is turned off to disconnect the first terminal and the third terminal. (Par 0036) a controller configured to control the first switch and the second switch based on operating parameters of the first solar module, wherein the controller receives input signals for controlling the first switch and the second switch, and wherein the input signals include duty cycle information, phase information, and a synchronization pulse. (Par 0029 and 36 Phase information is used to actively adjust the switch during the on and off cycles. Because the on and off states are out of phase with each other, the phase adjustment compensates for timing delays, ensuring the switch operates efficiently without overlapping signals or power loss.) Re Claim 2; Klein discloses wherein the first solar module includes a plurality of serially connected solar cells. (Fig. 4) Re Claim 4; Klein discloses wherein the controller controls the first period and the second period of the duty cycle. (Fig. 6 Par 0036) Re Claim 5; Klein discloses wherein the controller is coupled to the first terminal for obtaining the operating parameters of the first solar module. (Fig. 6 Par 0036) Re Claim 6; Klein discloses wherein the controller further configured to control the first switch and the second switch based on operating parameters of the second solar module. (Par 0023-5) Re Claim 8; Klein discloses wherein the first terminal is connected to a power bus. (Fig. 4) Re Claim 9; Klein discloses wherein the controller communicates with a system management unit through the power bus or wirelessly. (Par 0027) Re Claim 10; Klein discloses wherein the system management unit sends the input signals corresponding to the operating parameters of the second solar module to the controller. (Par 0027) Re Claim 11; Klein discloses wherein each of the first switch and the second switch is implemented by a transistor. (Fig. 6) Re Claim 13; Klein discloses wherein the duty cycle is based on a ratio of an operating voltage of the first solar module relative to an operating voltage of the second solar module. (Par 27-30) Re Claim 15; Klein discloses wherein the duty cycle is adjusted until a decrease in an operating voltage of the second solar module is detected. (Par 27-30) Claim Rejections - 35 USC § 103 The following is a quotation of pre-AIA 35 U.S.C. 103(a) which forms the basis for all obviousness rejections set forth in this Office action: (a) A patent may not be obtained though the invention is not identically disclosed or described as set forth in section 102, if the differences between the subject matter sought to be patented and the prior art are such that the subject matter as a whole would have been obvious at the time the invention was made to a person having ordinary skill in the art to which said subject matter pertains. Patentability shall not be negated by the manner in which the invention was made. Claim 12 and 14 are rejected under pre-AIA 35 U.S.C. 103(a) as being unpatentable over Klein Re Claim 12; Klein discloses comprising: a capacitor (C1) connected between the first terminal and the second terminal; and a diode (D2) connected between the first terminal and the second terminal. (Fig. 6). Klein does not disclose the diode (D2) connected between the first terminal and the third terminal. However, coupling the diode (D2) connected between the first terminal and the third terminal would have been obvious in order to prevent a back flow of current back to the PV. Re Claim 14; Klein discloses wherein the controller controls the first switch and the second switch Klein does not disclose based in part on temperature data for the first solar module or the second solar module. However, It is a universally established engineering fact that the power output and voltage of photovoltaic (PV) modules decrease as their temperature rises. Because the mathematical and physical relationship between temperature and module voltage/current is well-known in the industry, creating a control system that measures this predictable temperature and acts upon it requires no inventive skill. Response to Arguments Applicant's arguments filed 03/31/2026 have been fully considered but they are not persuasive. Applicant argues Klein reference, Applicant notes that the pending claims, as amended herein, recite "a controller configured to control the first switch and the second switch based on operating parameters of the first solar module, wherein the controller receives input signals for controlling the first switch and the second switch, and wherein the input signals include duty cycle information, phase information, and a synchronization pulse," incorporating aspects of original claims 3 and 7. The Klein reference does not explicitly disclose these aspects of the pending claims. For example, the Klein reference does not disclose using input signals that include phase information and a synchronization pulse to control the first switch and the second switch. However, the Examiner respectfully disagree, as shown in the rejection above, Klein discloses the claimed limitation. Conclusion Applicant's amendment necessitated the new ground(s) of rejection presented in this Office action. Accordingly, THIS ACTION IS MADE FINAL. See MPEP § 706.07(a). Applicant is reminded of the extension of time policy as set forth in 37 CFR 1.136(a). A shortened statutory period for reply to this final action is set to expire THREE MONTHS from the mailing date of this action. In the event a first reply is filed within TWO MONTHS of the mailing date of this final action and the advisory action is not mailed until after the end of the THREE-MONTH shortened statutory period, then the shortened statutory period will expire on the date the advisory action is mailed, and any nonprovisional extension fee (37 CFR 1.17(a)) pursuant to 37 CFR 1.136(a) will be calculated from the mailing date of the advisory action. In no event, however, will the statutory period for reply expire later than SIX MONTHS from the mailing date of this final action. Any inquiry concerning this communication or earlier communications from the examiner should be directed to DANIEL KESSIE whose telephone number is (571)272-4449. The examiner can normally be reached Monday-Friday 8am-5pmEst. Examiner interviews are available via telephone, in-person, and video conferencing using a USPTO supplied web-based collaboration tool. To schedule an interview, applicant is encouraged to use the USPTO Automated Interview Request (AIR) at http://www.uspto.gov/interviewpractice. If attempts to reach the examiner by telephone are unsuccessful, the examiner’s supervisor, Rexford Barnie can be reached at (571) 272-7492. The fax phone number for the organization where this application or proceeding is assigned is 571-273-8300. Information regarding the status of published or unpublished applications may be obtained from Patent Center. Unpublished application information in Patent Center is available to registered users. To file and manage patent submissions in Patent Center, visit: https://patentcenter.uspto.gov. Visit https://www.uspto.gov/patents/apply/patent-center for more information about Patent Center and https://www.uspto.gov/patents/docx for information about filing in DOCX format. For additional questions, contact the Electronic Business Center (EBC) at 866-217-9197 (toll-free). If you would like assistance from a USPTO Customer Service Representative, call 800-786-9199 (IN USA OR CANADA) or 571-272-1000. /DANIEL KESSIE/Primary Examiner, Art Unit 2836
Read full office action

Prosecution Timeline

Jan 02, 2025
Application Filed
Dec 01, 2025
Non-Final Rejection mailed — §102, §103
Mar 31, 2026
Response Filed
May 26, 2026
Final Rejection mailed — §102, §103 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12658712
AUTONOMOUS POWER GENERATION SYSTEM
3y 5m to grant Granted Jun 16, 2026
Patent 12651999
METHOD FOR CONTROLLING PHOTOVOLTAIC POWER GENERATION, CONTROL DEVICE, AND PHOTOVOLTAIC POWER GENERATION SYSTEM
3y 2m to grant Granted Jun 09, 2026
Patent 12630020
BATTERY MONITORING DEVICE
1y 6m to grant Granted May 19, 2026
Patent 12611948
DEVICE FOR CONTROLLING A DC-DC CONVERTER OF AN ONBOARD ELECTRICAL CHARGER
3y 2m to grant Granted Apr 28, 2026
Patent 12603518
REDUNDANT POWER SUPPLY SYSTEM
1y 5m to grant Granted Apr 14, 2026
Study what changed to get past this examiner. Based on 5 most recent grants.

Strategy Recommendation AI-generated — please review before filing

Get a prosecution strategy drawn from examiner precedents, rejection analysis, and claim mapping.
Typically takes 5-10 seconds — AI-generated, attorney review required before filing

Prosecution Projections

3-4
Expected OA Rounds
62%
Grant Probability
86%
With Interview (+24.5%)
3y 2m (~1y 8m remaining)
Median Time to Grant
Moderate
PTA Risk
Based on 700 resolved cases by this examiner. Grant probability derived from career allowance rate.

Sign in with your work email

Enter your email to receive a magic link. No password needed.

Personal email addresses (Gmail, Yahoo, etc.) are not accepted.

Free tier: 3 strategy analyses per month